This was an excellent package of hardware. When I purchase fasteners I usually buy more than I need so my supplies look more like an aisle in a well stocked hardware store. What made this purchase g... See more
While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more
To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more
Review summary
Created with AI, based on recent reviews
What people talk about most
Reviews shaping this summary
I found monster bolts two years ago. Excellent assortment of standard and metric screws and bolts in many of the common thread sizes used in present day firearms and accessories. Allows me to provi... See more
Monster bolts provides access to hard to find quality fasteners. The site flowed well to locate what I was looking for. Today the stainless steel versions are abundant however the specialized bl... See more
I emailed Monster bolts asking for dimensions for flange nuts which did not have a diagram in their listing. Jeff sent me the manufacturers Mill Test Report (thank you Jeff). The response was quick, p... See more
Company details
Written by the company
MonsterBolts is your top choice for both metric nuts and US sizing. Shop now for a great selection of nuts and washers, screws (socket, machine and Teks), bolts, Concrete Anchors, Type 17 Deck wood screws, sealed electrical connectors and fasteners onl...
Contact info
8124 Opportunity Drive, 32583, Milton, United States
- (850) 764-2658
- Info@MonsterBolts.com
- monsterbolts.com
4.7
Excellent
1K reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 22% of negative reviews
Typically replies within 24 hours
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Not sure why you’re asking for a review…
Not sure why you’re asking for a review for an item I have not received yet.
December 28, 2025
Always a pleasure to deal with
Always a pleasure to deal with, fast shipping, reasonable prices. Whats not to like?
December 28, 2025
Gunsmith
I found monster bolts two years ago.
Excellent assortment of standard and metric screws and bolts in many of the common thread sizes used in present day firearms and accessories.
Allows me to provide these items for repair or purchase at an excellent price point.
December 26, 2025
Yep ... good!
Fast shipping, and AMAZING packaging. Haven't used my bolts yet, but they look great, adn I love the re-usable bags for each item.
November 26, 2025
I ordered the wrong size screws and was…
I ordered the wrong size screws and was able to call and talk to a real person who told me how to return them. Thay stayed in contact through email the whole time. I ordered the wright size. it came well packaged and priced great. Would recommend highly.
November 26, 2025
All good thank you
November 25, 2025
Exactly what I ordered and fast…
Exactly what I ordered and fast shipping.
So much better prices than the hardware store.
November 27, 2025
You get exactly what you order.
November 25, 2025
I was trying to order a set screw and…
I was trying to order a set screw and had no idea how to tell the size of the screw?
I thought i was ordering a set screw that was the same size of a machine screw 8-32 1/4"
the only thing that I got right was the lenght of the screw. The set screw I was looking for was a 9/64 drive, screw size just under a 1/4" 20? 5/16" 18
Did not understand the sizes of the set screws wound out I got #8-32X1/4" bag of useless screws and out the monies as well.
November 27, 2025
Reply from Monster Bolts, Inc.
Hi William,
Thank you for your feedback — I’m sorry to hear the screws you ordered didn’t meet your needs. Set screw sizing can definitely be confusing, especially since the thread size, length, and hex-drive size don’t always correlate the way many customers expect.
I do want to mention that we’re always happy to help determine the correct size before purchase. We didn’t receive any questions or requests for assistance on this order, and we would gladly have walked you through the proper sizing to make sure you received the right part.
We’re always here to help — I just wish we’d had the chance to do so before this became a 1-star experience.
Great price and very fast delivery!
November 25, 2025
I ordered hardware from Monster Bolths…
I ordered hardware from Monster Bolths and everything was exactly what I needed. The parts fit perfectly and arrived quickly. I'd definitely order from them again.
November 13, 2025
Unprompted review
Excellent selection of products
Excellent selection of products, great prices and fast shipping!
November 1, 2025
Easy to find what you need
Easy to find what you need. Only place online that I was able to find the bolts I was looking for. Now for the Cons...please stop shipping USPS! It really takes too long. My order shipped on Nov 1st and today Nov 12th USPS tracking shows it is still in transit. The last package I ordered took 2 weeks also. Sorry MB but y'all really need to rethink your shipping carrier. That's my only complaint otherwise I would have definitely given 5 stars.
November 1, 2025
Good stuff!
November 3, 2025
It was easy to find the exact bolt.
It was easy to find the exact bolt.
Some how my street name changed from what I entered but the mail person was able to figure it out.
October 15, 2025
Good screws at half the cost of the…
Good screws at half the cost of the manufacturers ones that we had been using. good quality. You would get 5 stars if the price was a bit lower
November 2, 2025
Reply from Monster Bolts, Inc.
Sometimes it seems impossible to get that 5th star. :) Thank you for the review and business.
The Trustpilot Experience
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.
Learn more about other kinds of reviews.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.